Putty gun



A. POWER Jan. 31, 1950 PUTTY GUN 2 Sheets-Sheet 1 Filed April 20, 1948 G 3 INVENTOR.

AUGUST/N5 POWER ATTO/F/VEV AW 9 m m A- PUWN E R 3mm. m WEED PUTTY GUN Filed April 20, 19%

m mp E M U G U n ATTORNEY Patented Jan. 31, 1950 NlTED STATES PATENT OFFICE 9 Claims. (Cl. 222-260) This invention relates to putty guns. It is particularly directed to a machine for fill ing openings with putty and buffing the putty, so

as to completely fill the openings.

An object of the present invention is to provide a putty gun of the character described, including a plunger, and means to impart a rotary movement to the plunger for buffing putty extruded from the gun in order to completely fill openings left by countersunk flat head nails or screws.

Another object of this invention is to provide a putty gun which may be operated with considerable speed and which leaves a smooth buffed surface when filling openings with putty by means of the gun.

Yet another object of this invention is to provide a putty gun comprising a plunger formed with a helical outer thread, and means to push the plunger so as to cause rotation of the plunger as it is advanced.

Yet a further object of this invention is to provide a putty gun of the character described, comprising a cylinder to receive the putty, a piston at one end of the cylinder, a tube within the cylinder, a plunger within the tube, said tube having slots at one end, and means to press the piston for forcing putty through the slots in the tube, and a plunger mounted for rotation, as well as longitudinal movement in the tube for pressing the extruded putty out of the gun and forbufiing such putty into an opening to be filled.

Still a further object of this invention is to provide a strong, durable gun of the character described, provided with a trigger action to advance the plunger, and which shall yet be inexpensive to manufacture, easy to operate, easy to refill and assemble, and which shall yet be practical and efficient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts, which will be exemplifled in the construction hereinafter described, and of which the scope of invention will be indicated in the following claims.

In the accompanying drawings in which is shown various illustrative embodiments of this invention,

Fig. 1 is a side elevational view of a putty gun embodying the invention;

Fig. 2 is a front elevational view of a putty gun;

Fig. 3 is a rear elevational view thereof;

Fig. 4 is an expanded elevational view of the putty gun with parts in cross-section;

Fig. 5 is a cross-sectional view taken on line 5-5 of Fig. 4, and

Fig. 6 is a cross-sectional view taken on line 6-6 of Fig. 4.

Referring now in detail to the drawing, I0

2 designates a putty gun embodying the invention. The same comprises a cylindrical container II. Said container II has a cylindrical surface I2 closed at one end by an end wall I3. The end Wall I3 is formed with a central opening I4. Extending forwardly from the end wall I3 is an axial tube I 5. The front edge I6 of the tube I 5 is flush with the front edge ll of the cylindrical wall I2. The front end of the tube I5 is formed with a plurality of spaced longitudinal slots I8 for the purpose hereinafter appearing.

The end wall It is formed with a plurality of openings I 9 preferably equiangularly spaced. For the purpose of illustration three such openings are shown in the drawing. Extending inwardly from the tube I5 is a radial pin Fixed to the cylindrical wall I2, adjacent the front edge ll are a plurality of radial pins 22, three such pins being shown for the purpose of illustration. Attached to the bottom of the cylindrical Wall I2, and spaced from the front edge Il thereof is an apertured ear 25. Attached to the rear wall I3, and disposed below the opening I4 is a horizontally disposed pivot pin 25 supported on apertured ears fixed to said rear wall in any suitable manner.

Fitted on the front end of the cylindrical wall I2 is a cap 38. The cap has an annular cylindrical wall 3|, which telescopes over the front end of wall I2.

The cap 3!] also includes a curved or convex front wall 32 formed with a central through opening 33. Extending rearwardly from the front wall 32 at the opening 33 are a plurality of ribs 34 interconnected at their outer ends by an annular ring 35. The ribs 34 are each formed with internal shoulders 36. The cylindrical wall Si is formed with bayonet notches 31. The cap 30 is fitted into the front end of the cylindrical mem-- ber II and the radial pins 22 engage within the bayonet notches 31. The cap is first pushed in and then rotated for firmly attaching the cap to the cylindrical member. At the same time, the front end I5 of tube I 5 is received within the ring 35 and contacts the shoulders 36.

Slidably and rotatably mounted within the tube I5 is a plunger 40. The plunger do is formed at its rear end with a plurality of helical grooves 4| into which the inwardly extending pins 26 on the tube I 5 project. The front end of the plunger to is preferably concave, as at 42.

It will now be understood that when the plunger (it is pushed forwardly it will rotate.

Means is provided for advancing the plunger with the tube I5. To this end, there is rotat-ably I mounted on the pin 25 a trigger it. The trigger 35- has a finger engaging portion 45 projecting downwardly below the cylinder II. It is also formed with an upwardly extending finger 46 bifurcatedor formed with a slot ll. Attached to the rear end of the plunger is a headed 3 screw The shank of the screw passes through the slot ll. The upper end of the finger 16 contacts the plunger. The head of the screw keeps the slotted portion of the finger ie close to the rear of the plunger. The trigger it is also formed with a downwardly and forwardly inclined arm 4%. interconnecting the apertured ear 25 with the aperture in the arm 49 is a coil tension spring 59 which normally tends to rotate the. trigger it in a clockwise direction about the pivot 28 for retracting the plunger 40: When the plunger is retracted, its rear end projectsrear wardly beyond the back wall i3, as shown in Fig. 4 of the drawing. When a finger engages the finger engaging portion 35 and the trigger is pulled back. or rotated in; a: counterclockwise? di rection, looking at Fig. 4-, arm'tfi. will press. the; plunger. forwardly, and the plunger-will at the; same time be rotated due to. engagementof the: pins" 28 .in the helical grooves it. When the plunger isv fully pressed forwardly, itsv forward. end will protrude forward of the, cap,.oarrying a portion of putty and continue. its rotary movement until putty in the hole is buiied. The; cylinder. ii: or the. chamber 51, therein. between: the tube i5 and the cylindrical wall iz'is' filled with putty'beforethe cap is applied;

Means is provided to press the putty through the slots-l3 andthroughthe slots 52 formed between the ribsS-i so that as the plunger isad vanced and rotated, extruded putty will be pressed forwardlyto fill the opening against. which the cap is placed and the putty thus. pressed outwardly will be. buffed due to the r:- tation of the plunger' i-il. To this end, ther is. disposed within the chamber i an annular disc or piston 53' formed with a central openingfita for receiving the tube E51 Attached to the piston 53 are a plurality of parallel rods 54% passing through the openings i9.

Slidably mounted on the cylindrical member H is a carriage 55'. The carriage 55 comprises an annular ring 53 which telescopes on the cylindrical wall I 2. Extending from the ring orsleeve ESE-are longitudinal part cylindrical members 57. the rear ends of members -51 areinterconnected by an annular ring or sleeve 53 similarto ring- 56-; Ring is closed by a rear end disc or wall 59; towhich the rear ends of the rods 54 are attached. Also fixed to the rear'wall' 59 is a handle 60. The handle til has side walls 61 intercon nected by a bottom wall 52 and a rearwall 63; Thus, the handle 6%} is hollow and isfixed to both the rearwall es and to the sleeve 53. The sleeve is enlarged at'its lower end as'shown at 64; As the carriage 55 is' pressed forwardly, the rods 5 will press the disc 53 forwardly for caus ng putty to be extruded through the slots l8 and 52.

The putty gun is first loaded with putty, with the carriage in a r tracted posit on. The handle 6?] is held in the hand and the gun is pressed against a wall with the opening 23 surrounding the opening orhole in the wall to be filled putty. The carriage is pressed forwardl and then he trigger M is pulled back. Putty will thus be extruded through the slots is and 52- and the extruded putty will be p ess d into the opening to be filled and the combined rotary and forward movement of the-plunger will bufi 70v the surface smoothly.

It 1 will thus be seen that there is provided a device in which the several obiects of this invention are achieved and which is well adapted to meet the conditions of practical use.

As various possibl embodiments might be made of the above invention, and as various changes :might be made in the embodiment above set forth. it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim new and desire to secure by Letters Patent: 1. A putty gun comprising a chamber having a rear-wall, and an annular wall extending forwardly therefrom, a tube extending forwardly from said rear wall and adapted to contain a capfitted into the front end of said annular wall, said cap being formed with a central opening, means on said can -to; engage, the front end: of said. tube; a; plunger in said tube to extrude putty through .said central opening, a slot. at. the front:

end of said tube establishingconnection between.

said chamber and said tube, an annular piston within said chamber surrounding said tube, a. carriageaslidably mountedonsaid chamber, rodsinterconnecting the piston with said carriage and passing; through openings in therear; wall, and atriggen-pivotallymounted-on said rear wall and" engaging said: plunger for moving; said plungerin saidtube.

2. A;,putty gun comprisinga. casing having anouter. cylindricalwall and end walls. formed, with central openings, an axial tube interconnecting-r said' openings, said tubabeing formed with. one or' more openings; adjacent one end, thereof, a plunger'slidably extending intothe tube'through its" oppositeaend', saidca-singqbeing formed with:

a putty chamber between the tubeandsaid outer cylindrical wall, an annular piston within said chamber" and surrounding said tube, means for advancing. the plunger toward the first men tioned end offsaid: tube, andmeansior advance ing-thepiston toward said end of said tube, said:

plungerbeing' formedwith a helicalgroove, and means on:.said tubeengaging within said groove, whereby: said plunger: will rotate. as it is being advancedrtzoward thefirst mentioned'end of said tube-,the meansfor'advancing the plunger within said tube comprising'a trigger. pivoted to said casing, and: means; on. said trigger engaging said plunger;

3. A putty-gun comprising a casing having an outer cylindrical. wall and end walls formed with central; openings, an axial tube interconnecting saidopenihgs, saidtubebeing formed with one. or more openings adjacent. onev end thereof; a plunger; slidably cxtendinginto the tube through its o posite-end; said casing being formedwith a puttychamber-betweenthe tube and said outer cylindrical wall; an annular; pis on. within said.

chamber and surrounding" said tube. means for advancingvthe'plunger'toward thefirst mentioned end of: said tube, and. means for; advancing the piston toward said end: of. said tultasaid. plungerbeing formed witha helical groove. and means-on said tube engaging. within said. groove, whereby said plunger will rotate as it is being advanced toward. the first mentioned endof said tube, the means for advancing the. plunger.- within said tube comprising a: trigger pivoted'to' said. casing, and means onsaid trigger engaging 'said'plunger, and spring'means for. pivotallymoving said trigse 4, Aputty'gun-comprising-a casing havingan outer cylindrical wall and end walls vformed with central: openings; an axial. tube interconnecting said openings, said tube being formed with one or 7- -more2 openings adjacent; one. end thereof, a

plunger slidably extending into the tube through its opposite end, said casing being formed with a putty chamber between the tube and said outer cylindrical wall, an annular piston within said chamber and surrounding said tube, means for advancing the plunger toward the first mentioned end of said tube, and means for advancing the piston toward said end of said tube, said plunger being formed with a helical groove, and means on said tube engaging within said groove, whereby said plunger will rotate as it is being advanced toward the first mentioned end of said tube, the means for advancing the piston comprising a sleeve slidably mounted on said casing, one or more piston rods passing through an end wall of the casing and interconnecting said piston with an end of said sleeve, and a handle on said end of said sleeve.

5. A putty gun comprising a casing having an annular outer longitudinal wall, a central tube passing througi'i said casing, and open at both and end walls interconnecting the tube with said annular wall forming a chamber for putty, a plunger slidably mounted within said tube, said tube being formed with an opening at one end, so that said chamber will communicate with the interior of said tube, a trigger pivoted to one end Wall of said casing, said trigger being formed with a slotted arm, an axial pin on said plunger passing through the slotted arm, and means on said tube and plunger, whereby to rotate the plunger upon advancing said plunger within said tube, a piston within said chamber and surrounding the tube, and means to move said piston within said chamber.

6. A putty gun comprising a casing member having a cylindrical wall and an end wall, an axial tube open at both ends and fixed at one end to said end wall, a cap at the opposite end of said cylindrical wall, said cap being formed with a central opening communicating with the tube and having means to engage the free end of said tube, said tube being formed with a slot adjacent the capped end of said cylindrical wall, said casing being formed with a chamber between said tube and outer cylindrical wall, and an annular ring-like piston within said chamber, and adjacent one end of said casing, means to move the plunger longitudinally and rotatably within said tube, means for moving the piston within said chamber, said last mentioned means comprising a sleeve slidably mounted on said casing, said sleeve having an end wall, and one or more rods interconnecting said piston with said end wall and passing through openings in an end wall of said casing.

7. A putty gun comprising a casing member having a cylindrical wall and an end wall, an axial tube open at both ends and fixed at one end to said end wall, a cap at the opposite end of said cylindrical wall, said cap being formed with a central opening communicating with the tube and having means to engage the free end of said tube, said tube being formed with a slot adjacent the capped end of said cylindrical wall, said casing being formed with a chamber between said tube and outer cylindrical wall, and an annular ring-like piston within said chamber, and adjacent one end of said casing, means to move the plunger longitudinally and rotatably within said tube, means for moving the piston within said chamber, said last mentioned means comprising a sleeve slidably mounted on said casing, said sleeve having an end wall, and one or more rods interconnecting said piston with said end wall and passing through openings in an end wall of said casing, and a handle on said end wall of said sleeve.

8. A putty gun comprising a casing member having a cylindrical wall and an end wall, an axial tube open at both ends and fixed at one end to said end wall, a cap at the opposite end of said cylindrical wall, said cap being formed with central opening communicating with the tube and having means to engage the free end of said tube, said tube being formed with a slot adjacent the capped end of said cylindrical wall, said casing being formed with a chamber between said tube and outer cylindrical wall, and an annular ring-like piston within said chamber, and adjacent one end of said casing, means to move the plunger longitudinally and rotatably within said tube, means for moving the piston within said chamber, said last mentioned means comprising a sleeve slidably mounted on said casing, said sleeve having an end wall, and one or more rods interconnecting said piston with said end wall and passing through openings in an end wall of said casing, and a handle on said end Wall of said sleeve, the means for moving the plunger within the tube comprising a trigger pivoted to the casing and having means to engage said plunger.

9. A putty gun comprising a casing member having a cylindrical Wall and an end wall, an axial tube open at both ends and fixed at one end to said end wall, a cap at the opposite end of said cylindrical wall, said cap being formed with a central opening communicating with the tube and having means to engage the free end of said tube, said tube being formed with a slot adjacent the capped end of said cylindrical wall, said casing being formed with a chamber between. said tube and outer cylindrical wall, and an annular ring-like piston within said chamber, and adjacent one end of said casing, means to move the plunger longitudinally and rotatably within said tube, means for moving the piston within said chamber, said last mentioned means comprising a sleeve slidably mounted on said casing, said sleeve having an end wall, and one or more rods interconnecting said piston with said end wall and passing through openings in an end wall of said casing, and a handle on said end wall of said sleeve, and means for moving the plunger within the tube comprising a trigger pivoted to the easing and having means to engage said plunger, and spring means to pivotally move said trigger.

AUGUSTINE POWER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,976,903 Tear Oct. 16, 1934 2,082,521 Schneider June 1, 1937 FOREIGN PATENTS Number Country Date 226,241 Great Britain Feb. 25, 1926 528,531 Great Britain Oct. 31, 1940 

